#include<bits/stdc++.h>
using namespace std;
long long maxsum=0;
vector<long long>v1,v2;
int main()
{
    freopen("evensum.in","r",stdin);
    freopen("evensum.out","w",stdout);
    long long a,n;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>a;
        if(a%2==1)v2.push_back(a);
        else v1.push_back(a);
    }
    sort(v1.begin(),v1.end());
    sort(v2.begin(),v2.end());
    for(int i=v2.size()%2;i<v2.size();i++)
    {
        maxsum+=v2[i];
    }
    for(int i=0;i<v1.size();i++)maxsum+=v1[i];
    cout<<maxsum<<endl;
return 0;
}